Friedrich married Anna Wilhelmine Louise Buchert 8 May 1901, Jefferson, Wisconsin, USA. Anna (daughter of Hermann A. F. Buchert and Auguste Wilhelmine Emilie Lemke) was born 20 Apr 1879, Watertown, Jefferson, Wisconsin, USA; died 10 Jul 1965. [Group Sheet]

1. Magdalena Sellnow was born Abt 1903.
2. William Sellnow was born Abt 1905.
3. Herbert Sellnow was born Abt 1908.
4. Viola M. Sellnow was born Abt 1911.
5. Carl G. Sellnow was born Abt 1913.
6. Arthur C. Sellnow was born Abt 1915.
7. Anne E. Sellnow was born Abt 1915.
8. Ervin Sellnow was born Abt 1917.
9. Living